<template>
  <div>

    <codemirror
    ref="myCm"
    v-model="editorValue"
    :options="cmOptions"
    @changes="onCmCodeChanges"
    @blur="onCmBlur"
    @keydown.native="onKeyDown"
    @mousedown.native="onMouseDown"
    @paste.native="OnPaste"
  >
  </codemirror>
  </div>
  

</template>
  
  <script>
import { codemirror } from "vue-codemirror";
import "codemirror/keymap/sublime";
import "codemirror/mode/javascript/javascript.js";
import "codemirror/mode/xml/xml.js";
import "codemirror/mode/htmlmixed/htmlmixed.js";
import "codemirror/mode/css/css.js";
import "codemirror/mode/yaml/yaml.js";
import "codemirror/mode/sql/sql.js";
import "codemirror/mode/python/python.js";
import "codemirror/mode/markdown/markdown.js";
import "codemirror/addon/hint/show-hint.css";
import "codemirror/addon/hint/show-hint.js";
import "codemirror/addon/hint/javascript-hint.js";
import "codemirror/addon/hint/xml-hint.js";
import "codemirror/addon/hint/css-hint.js";
import "codemirror/addon/hint/html-hint.js";
import "codemirror/addon/hint/sql-hint.js";
import "codemirror/addon/hint/anyword-hint.js";
import "codemirror/addon/lint/lint.css";
import "codemirror/addon/lint/lint.js";
import "codemirror/addon/lint/json-lint";
import "codemirror/addon/selection/active-line";
import "codemirror/addon/hint/show-hint.js";
import "codemirror/addon/hint/anyword-hint.js";
require("script-loader!jsonlint");
import "codemirror/addon/lint/javascript-lint.js";
import "codemirror/addon/fold/foldcode.js";
import "codemirror/addon/fold/foldgutter.js";
import "codemirror/addon/fold/foldgutter.css";
import "codemirror/addon/fold/brace-fold.js";
import "codemirror/addon/fold/xml-fold.js";
import "codemirror/addon/fold/comment-fold.js";
import "codemirror/addon/fold/markdown-fold.js";
import "codemirror/addon/fold/indent-fold.js";
import "codemirror/addon/edit/closebrackets.js";
import "codemirror/addon/edit/closetag.js";
import "codemirror/addon/edit/matchtags.js";
import "codemirror/addon/edit/matchbrackets.js";
import "codemirror/addon/selection/active-line.js";
import "codemirror/addon/search/jump-to-line.js";
import "codemirror/addon/dialog/dialog.js";
import "codemirror/addon/dialog/dialog.css";
import "codemirror/addon/search/searchcursor.js";
import "codemirror/addon/search/search.js";
import "codemirror/addon/display/autorefresh.js";
import "codemirror/addon/selection/mark-selection.js";
import "codemirror/addon/search/match-highlighter.js";
export default {
  name: "index",
  components: { codemirror },
  props: ["cmTheme", "cmMode", "cmIndentUnit", "autoFormatJson"],
  data() {
    return {
      editorValue: "{}",
      cmOptions: {
        theme:
          !this.cmTheme || this.cmTheme === "default"
            ? "default"
            : this.cmTheme, // 主题
        mode:
          !this.cmMode || this.cmMode === "default"
            ? "application/json"
            : this.cmMode, // 代码格式
        tabSize: 4, // tab的空格个数
        indentUnit: !this.cmIndentUnit ? 2 : this.cmIndentUnit, // 一个块（编辑语言中的含义）应缩进多少个空格
        autocorrect: true, // 自动更正
        spellcheck: true, // 拼写检查
        lint: true, // 检查格式
        lineNumbers: true, //是否显示行数
        lineWrapping: true, //是否自动换行
        styleActiveLine: true, //line选择是是否高亮
        keyMap: "sublime", // sublime编辑器效果
        matchBrackets: true, //括号匹配
        autoCloseBrackets: true, // 在键入时将自动关闭括号和引号
        matchTags: { bothTags: true }, // 将突出显示光标周围的标签
        foldGutter: true, // 可将对象折叠，与下面的gutters一起使用
        gutters: [
          "CodeMirror-lint-markers",
          "CodeMirror-linenumbers",
          "CodeMirror-foldgutter",
        ],
        highlightSelectionMatches: {
          minChars: 2,
          style: "matchhighlight",
          showToken: true,
        },
      },
      enableAutoFormatJson:
        this.autoFormatJson == null ? true : this.autoFormatJson, // json编辑模式下，输入框失去焦点时是否自动格式化，true 开启， false 关闭
    };
  },
  created() {
    try {
      if (!this.editorValue) {
        this.cmOptions.lint = false;
        return;
      }
      if (this.cmOptions.mode === "application/json") {
        if (!this.enableAutoFormatJson) {
          return;
        }
        this.editorValue = this.formatStrInJson(this.editorValue);
      }
    } catch (e) {
      console.log("初始化codemirror出错：" + e);
    }
  },
  methods: {
    resetLint() {
      if (!this.$refs.myCm.codemirror.getValue()) {
        this.$nextTick(() => {
          this.$refs.myCm.codemirror.setOption("lint", false);
        });
        return;
      }
      this.$refs.myCm.codemirror.setOption("lint", false);
      this.$nextTick(() => {
        this.$refs.myCm.codemirror.setOption("lint", true);
      });
    },
    // 格式化字符串为json格式字符串
    formatStrInJson(strValue) {
      return JSON.stringify(JSON.parse(strValue), null, this.cmIndentUnit);
    },
    onCmCodeChanges(cm, changes) {
      this.editorValue = cm.getValue();
      this.resetLint();
    },
    // 失去焦点时处理函数
    onCmBlur(cm, event) {
      try {
        let editorValue = cm.getValue();
        if (this.cmOptions.mode === "application/json" && editorValue) {
          if (!this.enableAutoFormatJson) {
            return;
          }
          this.editorValue = this.formatStrInJson(editorValue);
        }
      } catch (e) {
        // 啥也不做
      }
    },
    // 按下键盘事件处理函数
    onKeyDown(event) {
      const keyCode = event.keyCode || event.which || event.charCode;
      const keyCombination = event.ctrlKey || event.altKey || event.metaKey;
      if (!keyCombination && keyCode > 64 && keyCode < 123) {
        this.$refs.myCm.codemirror.showHint({ completeSingle: false });
      }
    },
    // 按下鼠标时事件处理函数
    onMouseDown(event) {
      this.$refs.myCm.codemirror.closeHint();
    },
    // 黏贴事件处理函数
    OnPaste(event) {
      if (this.cmOptions.mode === "application/json") {
        try {
          this.editorValue = this.formatStrInJson(this.editorValue);
        } catch (e) {
          // 啥都不做
        }
      }
    },
  },
};
</script>
  
  <style scoped>
</style>